TM <> ERP Shipment Integration without PI possible?

Hi all,

We are stucked a bit and I hope that you can help me....

We have TM 9.5 and ECC 6 EhP 8 and we are setting up the Shipment Outbound Process. We use WebService and we don't have PI.

At the moment TM is already creating an ERP-Shipment and the confirmation messages will go from ERP to TM via an idoc. -> so we can see that the idoc will arrive in the TM system (BD87), but then it will fail.

We are not sure how to set up the partner profile correctly in WE20. Can someone tell me how to set up the "Inbound parameters" and especially which process code here?

Best regards and thank you,

Claas